Disk-sharpener.



J. I. DEPEW. DISK SHARPENER.

APPLICATION FILED AUG. 2, 1909.

Patented Dec. 27, 1910.

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DISK-SHARPENEB.

Application filed August 2, 1909.

Specification of Letters Patent.

Patented Dec. 27, 1910.

Serial No. 510,794.

T o all whom it may concern:

Be it known that I, JAMES I. Dnrnw, a citizen of the United States,residing at Loup City, in the county of Sherman and State of Nebraska,have invented a new and useful Disk-Sharpener, of which the following isa specification. f

It is the object of the present invention to provide an improvedconstruction of machine for repairing plow and cultivator disks, and theinvention aims to provide, in a single machine, means for resetting theedges of such disks and for sharpening the said edges.

It is a still further object of the invention to provide, in a machineof this class, means whereby disks of various diameters may be treatedor repaired, and such means is embodied, in part, in a disk-supportingmember, which may be moved to position to bring the edge of the diskbetween the setting rolls regardless of the diameter of the disk.

In the accompanying drawings :-Figure 1 is a side elevation of themachine, constructed in accordance with the present invention. Fig. 2 isa vertical longitudinal sectional view therethrough.

In the drawings the machine is illustrated as mounted upon a base frameA, only the upper portion of which is shown, it forming no part of thepresent invention, and serving merely to support the working parts ofthe machine in position. Upon the top vof this frame A, at the rearthereof, 1s a base-plate 10, having upstanding therefrom vertical framemembers 11, which serve as guides, between which are mounted blocks 12,13 and 14, the block 12 being disposed upon the base 10, the block 13upon the block 12, and the block 14 upon the block 13. A shaft 15 is journaled for rotation between the bearing blocks 12 and 13, and betweenthe bearing blocks 13 and 14 is journaled a similar shaft 16. The shaft15 has its rear end projecting beyond the rear faces of the bearingsbetween which it is journaled, and carries a worm wheel indicated by thenumeral 17, this wheel being in mesh with a worm shaft 18, which isjournaled in an inverted semi-cylindrical housing 19, integral with acap plate 20, which is secured upon the bearing block 14.

A base-plate 23 is disposed upon the top of the base frame A of themachine at the forward end thereof, and, upstanding from this base plate23 are side frame members or guides 24, having reinforcing flanges orwings 25. Between these guides 24 are mounted bearing blocks, oneindicated by the numeral 26, another by the numeral 27, and a third bythe numeral 28, these blocks corresponding to the blocks 12, 13, and 14,respectively, heretofore described, and the upper block 28 correspondingnot only to the block 14, but also to the cap plate 20, inasmuch as itembodies ears 29, located one at each end, through which the upper endsof bolts 30 are passed, these bolts engaging, at their lower ends,through the base plate 23, and serving to hold the upper block 28 inposition upon the block 2 and to cause the blocks 28 and 27 to bear moreor less firmly upon the shaft above which they are disposed, it beingunderstood that the shafts 15 and 16, heretofore described, arejournaled also between these several blocks 26, 27 and 28 in the samemanner as they are journaled between the blocks 12, 13 and 14,respectively. Between the two sets of bearing blocks above described,the shafts 15 and 16 have mounted thereon gears 31, which are in meshand gear the two shafts for simultaneous rotation at the same rate ofspeed. Upon the worm shaft 18 is flXedly mounted a flywheel 32, and itwill be readily understood that when this fly-wheel is rapidly rotatedthe shaft 15 will be correspondingly rotated and will impart rotativemotion to the shaft 16.

Upon the forward ends of the shafts 15 and 16 are fixed disk rolls, oneof which (the upper one) is indicated by the numeral 33, and the other,(the lower one) by the numeral 34. The upper disk roll 33 has itsvperipheral edge concaved throughout aportion of its width, as indicatedby the numeral 35, and the peripheral edge of the lower disk 34 isconveXed throughout a corresponding portion, as indicated by the numeral36, the concave portion of the roller 33 and the convex portion of theroller 34 coperating to concave or set the edge of a plow or har-rowdisk rolled between them.

The invention contemplates, as beforeI stated, the provision of meansfor support-V ing a disk, the edge of which is to be reset andsharpened, and the means provided will now be described.

The means mentioned above is embodied in part in a stationary arm, theattaching Y 33 and 34. Then so positioned, the portionportion of whichis indicated by the numeral 35; the arm being comprised, in addition tothe attaching portion, of an upstanding portion 36 and a portion 37which eX-l tends nearly parallel to the portion 35, but in an oppositedirection from the portion 36 to that in which the attaching portion eX-tends. The attaching portion is slidably fitted in a seat 33, which isformed in the base 23, and the arm is held firmly in place through themedium of a securing bolt 39, which is engaged through a bracket 40 uponthe stand A and interchangeably through openings 4l in the saidattaching portion 35 of the arm, it being understood that, by thisconstruction, the arm may be supported in various positions in advanceof the disk rolls 37 of the arm will project forwardly considerablybeyond these disks 33 and 34, and is to be grasped by the left hand ofthe operator of the machine, the right hand grasping the handle end of alever 42, which is pivoted as at 43 upon the portion 37 of the arm, andhas its free or handle end projecting in the same general direction asthe said portion 37 of the arm. This lever 42 has a widened portion orenlargement, which is indicated by the numeral 44. Upon this widenedportion 44 of the lever 42 there is formed an upstanding sleeve socketindicated by the numeral 45, and fitted loosely removably in this socketis a short stub shaft or spindle, which is indicated by the numeral 46,and which is provided with a head 47. As will be observed from aninspection of Fig. 1 of the drawings, the disk, the edge of which is tobe overturned, said disk being l illustrated in dotted lines in saidfigure of the drawings and indicated by the reference character I), hasthe shaft or spindle 46 engaged through its axial opening, with the head47 bearing against the upper or conveX surface of the disk. Then somounted, by swinging the hand lever 42 upon its pivot to the right, theedge of the disk will be brought to position between the disk rolls 33and 34, between the working surfaces 35 and 36 thereof respectively,whereupon motion is imparted to the shafts 15 and 16, to cause therotation of the disks 33 and 34, whereupon the edge of the disk D willbe overturned to the proper degree.

lVhat is claimed is In av machine of the class described, a frame,shafts mounted to rotate in the frame, disk-rolls carried one by each ofthe shafts, said rolls coperating, a bracket supported upon the frame, asupport comprising a bar bent to afford a portion disposed upon thebracket and formed with a plurality of openings, a bolt engaged throughthe bracket and 'through the openings interchangeably, said bar beingbent from its said portion to er; tend upwardly and thence ,forwardly atan angle downwardly, in` advance of the rolls, and a lever pivoted uponthe last mentioned portion of the bar and arranged to support the diskto be sharpened.

In testimony that I claim the foregoing as my own, I have hereto aixedmy signature in the presence of two witnesses.

JAMES I. DEPEIV.

Witnesses IV. E. HENRY, JN0. WV. LONG.

